Brake-rigging.



'T; L. BURTON.

BRAKE RIGGING.

- 7 APPLICATION FILED AUG.21. I913. Lmfllfiu. Patented Dec.28,1915.

2 $HEET$SHEET I- T.. L. BURTON.

BRAKE RIGGING. APPLICATION FILED AUG. 2 l9l3- Patented Dec. 28, 1915.

2 SHEETS-SHEET 2.

v C v N w m x L Q '\m \m Q Q N E 2y 161*- N a K L Q N a m a w THOMAS L. BURTON, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO AMERICAN BRAKE COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

Specification of Letters Patent.

BRAKE-RIGGING.

Patented Dec. 22, 1915..

Application filed. August 21, 1913. Serial No. 785,902.

To all whom it may concern:

Be it known that l, THOMAS L. BURTON, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a certain new and useful Improvement in Brake- ]Rigging, of which improvement the following is a specification.

This invention relates to the clasp type of brake rigging forrailway cars, and in which brake shoes are applied to both sides of each pair of truck wheels.

The principal object of my invention is to provide an improved construction orthis type, in which a double set of truck levers and rods are employed, one at each side of the truck, and having an intermediate floating lever located near the center of the truck for each of the two sets of truck rods and levers. The power from the brakecylinder' is applied to both of said intermediate floating levers, and from them is transmitted by.

suitable connections in opposite directions to the sets of truck levers and rods and the brake shoes.

Tn'the accompanying drawings: Figure 1 is a half plan of one form of clasp type brake applied to a four, wheeled truck, and embodying my improvement; Fig. 2, a longitudinal sectional view of the same showing one set of truck rods and levers in elevation; Figs. 3 and 4, views, similar to Figs.

1 and 2 respectlvely, and showing a modification; Figs. 5 and 6, detail views in vertical section and plan respectively, showing another modification; and, Figs. 7 and, 8, a plan and vertical longitudinal section respectively, showing still another modification of my improvement, as applied to a six wheeled truck. I

My improvement is especially adapted for use in connection with pivoted trucks having a plurality of pairs of wheels, usually four or six, car, and having brake shoes applied to both sides of each pair of wheels.

According to the construction shown in" Figs. 1 and 2 of the drawings, the improvemerit is applied to a four Wheeled truck having brakebeams, B B B and 13*, at both sides of each pair of wheels and two sets of truck levers, 1, 2, 3, and 4, with coupling rods, 8 and 9, only one set being shown in Fig. 1, the parts being duplicated upon the other side of the truck, as will be readily unemployed at both ends of the 'derstood. The intermediate floating lever,

5, is connected in one direction, by means of which have brake shoes at their ends supported by suitable hangers, H. At the ends of the truck, however, or where the dead truck levers are located, the separate hangers may be eliminated, and the dead truck lever may serveas a combined hanger and lever, by supporting the brake shoe directly upon said lever, connecting the end of the beam to the lever, and attaching the pull rod to the brake beam, all as fully shown in connection with the outside dead truck levers, 1 and'4, and beams, 13 and B In this way, the power is transmitted from-the live levers, 2 and 3, by the respective rods 8 and 9. directly to the corresponding brake beams, B and 13*, which latter are attached to the respective hanger. levers, 1 and 4, thereby applying all of the brake shoes with equalized pressure. I

As shown in Figs. 1 and 2, the intermediate levers, 5 and 6, which are located near the center plate, C, of the truck, are substantially horizontal, and the power from the brake cylinder is applied by means of pull rod, 12, and equalizer, 12, connected to the inner ends of the floating levers, 5.

According to the modification shown in Figs. 3 and 4, the in'termediate' levers, 5, and 6, are located vertically in substantially the same plane with the truck levers at the sides of the truck, the equalizer, 12 in this case being made longer and connected to the middle point ofthe floating lever, 5, which is coupled by pull rod, 11, to the truck lever, 2, While the intermediate. lever, '6, has a fixed fulcrum at its center, and a rod 10", at one end connected to the truck lever, 3, the tie rod, 7, in this case being located at the ends of the levers, 5 and-6, instead of at the middle, as in Fig. 1.

As shown in Figs. 5 and 6, the construccept that the position of levers, 5 and 6, is

transposed, placing the re 7, in compression, and the levers, 6, are slightly inclined in order that the pull rods, 10 and 11", connected to the respective truck levers, 2 and 3, may clear each other, as indicated in Ijig. 5.

In Figs. 7 and 8, I have shown my improvement applied'to a six wheeled truck and the arrangement of intermediate levers, and 6, is similar to that of Fig. 1, except that these levers are located vertically at each side of the truck, and the lower ends of the said levers are coupled by'mea'ns of the v respective links, 11 and with the truck levers, 16 and 15, which are pivotally connected at their lower'ends to the respective brake beams, B and B on opposite sides of the center pair of wheels. The upper ends of the center truck levers, 15 and 16, are connected by the rods, 13 and I l, respectively, with the live truck levers, 2 and 3, of the end pairs of Wheels, which are substantially the same as in the four wheeled truck construction. The brake shoes for all intermediate brake beams, B B B, and B are supported by hangers, H, while the combined lever and hanger is employed at the end or dead truck levers, 1 and 4, as before described.

In all of these modifications, it will now be seen, the'power from the brake cylinder pull rod is applied to a double set of intermediate levers' located near the center of the truck, for transmitting the stresses in opposite directions to the double set of truck rods and levers located uponopposite sides of the truckand applying the pressure to shoes upon both sides of each pair of wheels.

Having now described my invention, what I claim as new and desire ters Patent is:

1. In a brake rigging for pivoted trucks having a plurality of pairs of wheels, the combination with brake shoes applied to both sides of each pair of wheels, and a 7 double setof truck levers and rods, one set at each side-of the truck, of an intermediate floating lever upon each side of the truck,

- and having. connections extending in oppotermediate lever and to another truck lever.

3. In a brake rigging for pivoted trucks having a plurality of pairs of wheels, the combination with brake' shoes applied to to secure by Letside shoes of both outside both sides of each pair of wheels, and a double set of truck-levers and rods, one set at each side of the truck, of an intermediate floating lever upon each side of the truck, and having a rod connected to one of the truck levers, another intermediate lever having'a fixed fulcrum and a rod connected to shoes applied to both sides of each pair of wheels, two truck levers pivotally connected to each brake beam at the sides of the truck, pull rods for said truck levers, a pair oit' intermediate floating levers with pull rod connections for the respective sets of truck levers and an equalizer connecting said intermediate levers.

5. In a brake rigging for pivoted trucks having a plurality of pairs of wheels, the combination with brake beams and brake shoes applied to bothsides of each pair of wheels, two live truck levers pivotally con-' nected at their lower ends to the brake beam at one side of the end pair of wheels, two dead truck levers pivotally connected to the brake beam at the other side of said end pair of wheels, and a tie rod connecting each of said live truck levers to the latter brake beam.

6. In a brake rigging for pivoted trucks having a plurality of pairs of wheels, the

combination with brake. beams and brake shoes applied to both sides of each pair of wheels, two live truck levers pivotally connected to one of said brake beams, hangers for said beam, two dead truck levers supporting the opposite brake beam and carrying brake shoes, and tie rids connecting said live truck levers with said latter brake beam.

7. In a brake rigging for pivoted trucks having a plurality of pairs of wheels, the combination with brake shoes applied to both sides of each wheel, of a truck. lever for each shoe, the truck levers for the outpairs of wheels comprising hanger-levers pivoted at their lower ends to the brake shoes and having fixed fulcrums, and connecting rods for actuating said levers. o 8. In a brake rigging for pivoted trucks having a plurality of pairs of wheels,'the combination with brake shoes applied to both sides of each wheel, of a truck lever for each shoe, the truck levers for the shoes at one side of both outside pairs of wheels comprising hanger levers supporting the brake shoes at their lower ends and having fixed fulcrums, and connecting rods for actuating said levers.

9. In a brake. rigging for pivoted trucks meeme having a plurality of pairs of wheels, the combination of brake shoes applied to both sides of each Wheel, truck levers for said shoes, the truck levers for the shoes at one side of both outside pairs of Wheels comprising hanger levers pivotally attached at their lower ends to the shoes and having fixed fulcrums, a brake beam supported at an intermediate point on said hanger levers,

and connecting rods attached to said brake beam. 4

10. In a brake rigging for pivoted trucks having a plurality of pairs of Wheels, the combination of brake shoes applied to both sides of each vvheel, hanger levers pivotally attached to the shoes at one side of an out-, side pair of heels and having fixed fulcrums, a brake beam supported at an intermediate point on said hanger levers, abrake beam upon the'opposite side of said pair of Wheels, live truck levers pivotally connected .to the latter brake beam, and rods connecting said live truck levers" with the opposite brake beam..

. THOMAS L. BURTON. Witnesses:

J. SNOWDEN BELL, EDWARD A. WRIGHT. 

